Click an output area to see its interpretation.
Body Composition Analysis
The InBody 770 applies a quantitative value to the various components of the body’s composition.
These values represent the weight of each compositional component that comprises the examinee’s total body weight.
1) Intracellular Water, Extracellular Water and Total Body Water
The InBody 770 measures Total Body Water by using
multi-frequencies, separating TBW into Intracellular Water and
Intracellular water (ICW) indicates the amount of water within the
Extracellular water (ECW) indicates the total amount of water in
the interstitial fluid and blood.
2) Dry Lean Mass
Dry Lean Mass is the total body mass minus the water and the fat
It is composed primarily of proteins and mineral.
Protein is solid in body cells, comprised of polymers of organic
compounds, including nitrogen, and is a major component of muscle.
Protein is directly related to intracellular water. A lack of
protein can be indicative of poor nutrition.
3) Body Fat Mass
Body Fat Mass indicates the total quantity of lipids that can be
extracted from fat and all other cells.
BIA technology does not directly measure Body Fat Mass, but is
determined as being the remaining poundage value after subtracting Lean
Body Mass from the total body weight.
Body Fat Mass is found stored under the skin, in visceral areas,
and between muscles. When an examinee’s fat mass is higher than the
he/she is diagnosed as being obese. Monitoring the amount of body
fat mass an individual has is critical to maintaining good health.
4) Lean Body Mass
Lean Body Mass refers to the entire body weight with the exception
of Body Fat Mass.The InBody 770 provides both the fundamentals as well
as the comprehensive data related to Lean Body Mass that can aid in the
evaluation of the health status of the examinee. As reference, athletic
body types will have a higher proportion of Lean Body Mass compared to
normal body types. As such, it is important for all body types alike to
monitor their Lean Body Mass.
5) Body Weight
The InBody 770 technology provides the ability to separate body
weight into Total Body Water, Dry Lean Mass, and Body Fat. Body weight
is the total sum of these three components.
The Muscle-Fat Analysis uses bar graphs to provide a comparison
between Weight, Skeletal Muscle Mass, and Body Fat Mass.
The lengths of the bar graphs indicate the relationship between
the current weight to the average value for that specific component,
based on the examinee’s height.
Therefore, an individual with a score of 100% indicates the
individual is at the average value, calculated based on the average
weight based on their height for that particular segment.
The horizontal bar graph helps to visualize the examinee’s current
body weight in relation to the average weight. The numbers next to the
bar graphs indicate the numerical values for that examinee’s body
Standard weight indicates the average value in accordance with the
examinee’s height. The InBody770 provides the standard weight range,
based on the BMI (Body Mass Index) Standard Weight Index.
2) Skeletal Muscle Mass
In comparison to the average weight, 100% Skeletal Muscle Mass
indicates the examinee being measured has reached the average weight in
Skeletal Muscle Mass.
The normal range of SMM is 90-110% of the standard SMM. Change in
skeletal muscle, as the result of increased exercise and diet
modifications, is the most effective indicator of health improvements.
3) Body Fat Mass
Body Fat Mass represents all of the fat molecules an individual
has in their body.
100% Body Fat Mass indicates the examinee being measured is at the
average weight in Body Fat Mass, based on the examinee’s height.
The average range of Body Fat Mass is established by calculating
an examinee’s body fat mass and comparing it to the average total body
weight and average Body Fat Mass.
Body Mass Index (BMI) is an index used to determine obesity by
using height and weight.
The BMI method has been widely relied on in general medicine,
dietary, and sports medicine fields as the main means of diagnosing
However, this method is flawed in that it cannot be applied to
adults with high levels of LBM, children, those over the age of 65, or
Nevertheless, as BMI has been the most commonly used index,
research using the BMI method to prevent adult diseases has been
This is why InBody770 also provides BMI-based information.
2) Percent Body Fat
The standard PBF is 15% for males and 23% for females, which are
the respective midpoints of the standard ranges of Body Fat Mass in
relation to standard weight:
10-20% of the standard weight for males and 18-28% for females.
An individual with a calculated PBF that is greater than the standard
range is regarded as having a high level of body fat.
When an individual’s PBF is below the standard range, they are
regarded as having a low level of body fat.
Individuals with low levels of body fat can be separated into
The first has muscle mass that is deemed an appropriate amount
for that individual’s body composition.
The second type has an inadequate amount of muscle mass in
relation to their body composition. These individuals can be considered
to be in an unhealthy state due to their imbalance of Body Fat Mass and
LBM, and these individuals have a higher possibility of contracting
*PBF = Fat(lb) / Weight(lb) x100
Segmental Lean Analysis
There are two bar graphs for each body part in the Segmental
Lean Analysis graph.
The display of the two bar graphs allows for a more effective
and informed assessment of the current distribution of the lean mass the
The two graphs have different meanings, respectively.
The numbers beside the upper bar graph indicates the lean mass
weight of the examinee in the designated segment.
If the length of the upper bar graph reaches 100%, it indicates
the examinee is at the ideal lean mass for that segment based on his or
her ideal weight, derived from the examinee’s height.
Therefore, the length of the upper bar graph shows the relative
ratio of the ideal lean mass based on his or her ideal weight. Since the
upper bar graph is based on the lean mass of the examinee’s ideal
weight, the 100% value will not vary unless there is a change in his or
If the lower bar graph reaches 100%, it indicates the
examinee is at the ideal lean mass in relation to his or her current
weight. Therefore, the length of the lower bar graph indicates the
relative ratio of the ideal lean mass for their current weight, while
the number beside the lower bar graph shows that ratio. Since the lower
bar graph is only based on the lean mass of the current weight, the 100%
value will alter in accordance with weight change. Though it is not
possible to check the increase or decrease of the lean mass as with the
upper graph, the lower graph will directly reflect changes in the
examinee’s weight, thereby allowing you to determine whether or not
there is actual lean mass appropriate to his or her weight.
Segmental Lean Analysis provides examinees with the ability to
observe their upper/lower lean balance, left/right lean balance, and
lean body mass distribution, segmentally. This allows for close
monitoring of the distribution of lean body mass to help determine if
the distribution of lean mass is adequate or if changes need to be made.
Total Body Water is composed of Intracellular Water and
Extracellular Water (ECW) is the plasma water, interstitial
water, transcellular water, and water found in bone, cartilage, and
dense connective tissues.
Intracellular Water (ICW) is the water found in the cytosol of
every cell in the body.
A significant fraction of the human body is composed of body water. In
diseased states the body water may be affected and become unbalanced.
Body water is regulated by hormones, including the anti-diuretic
hormone (ADH), aldosterone and atrial natriuretic peptide.
In healthy individuals, intracellular fluid takes up roughly 62%
of the body water, extracellular fluid takes up roughly 38% of the body
water. Within the extracellular fluid, plasma takes up 1/5 of the
extracellular fluid and interstitial fluid takes up 4/5 of the
The ECW/TBW provided on the InBody 770 allows for the monitoring of
fluid distribution of the examinee.
ECW/TBW can allow for the detection of unusual shifts in fluid
distribution or changes in the Intracellular-Extracellular ratio.
A healthy individual is expected to have a ratio of ICW to ECW is 3 to
2, which is 0.38 when calculated as ECW/TBW.
To be considered within a normal range, an individual’s ECW/TBW
ratio is expected to fall within 0.360-0.390.
If your ECW/TBW Ratio is above 0.390, this may indicate the
presence of chronic health conditions that may require medical
Body Composition History
After an InBody Test is taken on the InBody770, the results will
be saved onto the device only if an ID is entered at the beginning of
The saved test results allow for monitoring of weight, LBM, Body
Fat Mass and Percentage of Body Fat.
An individual measuring under the same ID will have their body
composition results from the last 10 tests displayed on the bottom of
the result sheet in a cumulative graph.
Below the cumulative graph, it also has a data table. The
cumulative graph helps for a quick and easy understanding of changes in
the examinee’s body composition and current condition.
The body composition history allows an individual beginning a variety
of health treatment plans such as dietary-exercise modifications to
monitor and track their progress. This allows for body composition
changes to be monitored over time, taking into account where the
individual started, the progress being made, changes in the overall body
composition, and the ability to identify if modifications need to be
made to the treatment plan based on the body composition history.
Visceral Fat Area
Visceral Fat is the fat surrounding your major organs. InBody
provides an output of the amount of visceral fat area the examinee has.
Because of the location of visceral fat, the amount of visceral
fat the examinee has is associated with the risk of developing certain
An accumulation of visceral fat can contribute to increased risk
of Insulin-Resistant Diabetes, Heart Disease, Stroke, and even
The accumulation of visceral fat has also been associated with
technical difficulties in performing surgery, specifically abdominal
It is recommended to maintain a Visceral Fat Level under 10 to
minimize health risks associated with excess visceral fat.
Therefore, it is important to monitor the examinee’s visceral
fat levels provided by InBody in order to properly assess that
individual’s current chances of developing the mentioned health risks.
Body Fat Mass-Lean Body Mass Control
Body Fat - LBM provides the examinee a gauge that allows them to
optimize the InBody770 Result for their dietary-exercise modification
llowing the examinee to make adjustments to the lean body
mass-fat mass ratio rather than simply increasing or decreasing his/her
It explains to the examinee how to control his/her weight,
especially by gaining or losing muscle or fat.
Here, ‘+’ refers to the mass that must be increased, and ‘-’
refers to the mass which should be decreased.
These numbers, a unique index offered only by InBody, indicate
how many pounds of Body Fat Mass should be lost / gained and how many
pounds of LBM should be gained through exercise.
Many people give up in the middle of the process of treating their
obesity because their weight has not changed. In many cases, the reason
is that LBM has increased as much as the amount of Body Fat Mass lost.
However, as their actual weight has not changed at all, the
effectiveness of the weight management program may be difficult to
ascertain without the use of InBody technology. The InBody770 makes it
possible for the examinee to see how much Body Fat Mass has been lost
and how much LBM has been gained during the weight management program.
Therefore, the InBody770 is a very useful device for identifying
obesity, monitoring the weight management process, and facilitating the
formation of a trust-based relationship between health professionals and
Segmental Fat Analysis
Segmental Fat Analysis is a derivative of the segmental lean
This is presented on the results sheet as a segmental breakdown,
similar to the segmental lean analysis.
This portion of the result sheet provides both the weight value,
as well as a percentage value.
The segmental fat analysis evaluates whether the amount of fat
is adequately distributed throughout the body, based on the examinee’s
ideal body weight based on their height.
Each bar shows fat mass in comparison to the ideal.
Basal Metabolic Rate
The Basal Metabolic Rate (BMR) indicates the minimum energy
required to sustain vital functions while at rest.
The InBody770 uses the Cunningham equation to determine the BMR
using a known regression equation based on the amount of LBM an
LBM is known to be closely related to BMR. BMR is usually
calculated using indirect Calorimetry, which measures oxygen demand.
However, the InBody770 calculates BMR using Lean Body Mass.
Therefore, should the examinee gain LBM during the weight
management program, their BMR would also increase, which is a desirable
result in any weight management program.
Leg Lean Mass
InBody is able to provide Leg Lean Mass. This is of importance
because approximately 40% of the total Lean Body Mass can be accounted
for in the legs.
Providing a value for the total lean body mass in an
individual’s legs allows for a more personalized health care program.
Leg Lean Mass is the largest component of SMM and plays a significant
role in disease risk/prevention due to its function in health and
functional mobility for those of older age.
Total Body Water/Lean Body Mass is presented as a percentage
This TBW/LBM describes the density of the individual’s muscle.
Knowing that the majority of TBW is found in the muscle cells of the
this ratio can provide additional information regarding the
health status of the examinee.
TBW(lbs)/LBM (lbs) * 100
Reactance is the opposition to a change in current or voltage.
In BIA, reactance is a common measurement associated with how cells react to the electrical current.
This value is measured in BIA mainly for the purpose in obtaining the phase angle.
Whole Body Phase Angle
Phase Angle is an indicator of cellular integrity and intracellular water.
The InBody provides Whole Body Phase Angle and Segmental Phase Angle at 50 kHz.
Higher Phase Angle indicates greater cellular integrity and/or fluids inside the cells.
Results Interpretation QR Code
InBody provides a Results Interpretation QR code located on the
bottom right hand of the result sheet. This 2D barcode allows the
examinee to gain access to the background information provided on the
result sheets from their mobile device, ensuring information regarding
examinee results are accessible any time, any place.
To access result interpretation information through your
smartphone, simply use the smartphone QR code scanner application of
your choice to scan the QR code, which will then direct you to the
InBody link that provides supplemental information.
Impedance is the frequency-dependent opposition of a conductor
to the flow of an alternating electric current.
Impedance is composed of two main properties, resistance and
InBody provides segmental impedance values at varying
frequencies to allow for accurate analysis of the human body.
Since reactance is the interrupting force of alternating current flow,
it increases in proportion to the integrity of cell membrane.
Therefore, reactance and phase angle decrease when the number of
cells is low or the cell membrane is more permeable or unhealthy.